Metallized Ceramics Solution

At グレート・セラミック, we specialize in metallized ceramics solutions tailored for high-performance industrial and electronic applications. With a strong foundation in advanced ceramic machining, we deliver custom ceramic metallization services that enable robust, high-temperature, and hermetically sealed ceramic-to-metal assemblies.

Whether your application requires ceramic-to-metal feedthroughs, vacuum electronic packagingあるいは high-reliability metallized substrates, our engineering and processing capabilities ensure consistent quality and high-performance results.

スキップする

はじめに | 能力 | Cases | 材料 | アプリケーション | よくあるご質問

Metallized Ceramics: Advanced Ceramic Metallization Services

What are Metallized ceramics?

Metallized ceramics represent a cornerstone in modern ceramic packaging technology, enabling reliable, high-strength, and hermetically sealed joints between ceramic and metal components. By depositing a functional metal layer onto an insulating ceramic surface, we create surfaces that support brazing ceramics to metal, vacuum electronic packagingそして electrical connectivity while retaining the intrinsic benefits of advanced ceramics.

Why Metallized Ceramics?

Ceramics such as alumina (Al₂O₃), aluminum nitride (AlN), zirconia (ZrO₂)そして silicon nitride (Si₃N₄) possess excellent thermal stability, wear resistance, and electrical insulation. However, they are difficult to bond directly to metals due to poor wettability and mismatched thermal expansion.

Metallization technology overcomes these limitations by forming a metallurgical bond between ceramic and metal via various methods—enabling:

  • Electrical insulation with metal connectivity
  • 高い機械的強度
  • Excellent vacuum compatibility
  • High temperature and corrosion resistance
  • Stable hermetic sealing with metals

What We Do: Ceramic Metallization Capabilities

Great Ceramic delivers high-reliability metallized ceramics using proprietary Mo/Mn and Mo/Mn/W coatings, enabling precise, hermetic ceramic-to-metal brazing. With in-house plating, tight-tolerance machining, and full testing for strength and seal integrity, we provide custom solutions for medical, electronic, power, and sensor applications. The metallization performance indicators are as follows:

  • Vacuum air tightness: Leakage rate ≤1×10-11Pa.m³/s

  • Mechanical strength: Average tensile strength ≥130MPa, Single point tensile strength ≥100130MPa.

  • Thermal shock performance: 6 times between 600℃ and room temperature, no cracking or leakage

Metallization Techniques Offered

Our experts work with you to select the best metallization materials and processes to achieve reliable, high-strength brazed joints, even in challenging geometries.

  • Mo-Mn (Molybdenum-Manganese Metallization)
  • Mo-Mn/W
  • Active Brazing Alloys (ABA)
  • Thick Film Metallization

Metallization Application Methods

We will choose the appropriate method based on the product structure (cylindrical, flat, inner hole) as well as batch and precision requirements.

  • Outer Diameter & Inner Diameter Banding
  • Brush
  • Screen Printing
  • Spray
  • Needle

Metallized ceramic case

We will custom produce metallized alumina ceramics for ultra-high vacuum feedthroughs, vacuum isolator flanges, gas discharge tubes, grid tubes, vacuum circuit breakers, vacuum capacitors and similar applications according to customer drawings and requirements.

Metallized Ceramic Insulator

Metallized Ceramic Insulator

Vacuum Ceramic Component

Vacuum Ceramic Component

Metallized Ceramic Insulator

Metallized Ceramic Insulator

Metallized Ceramic Ring

Metallized Ceramic Ring

Optional metallized ceramic materials

We offer a wide range of high purity metallized alumina ceramic components (95%~99.7% purity) for thick film metallization of molybdenum (Mo-Mn) and tungsten (W). The main metallization methods used include screen printing or vacuum sputtering, followed by electroplating or chemical plating on the metallized surface with nickel, gold, silver or tin. In this way, ceramics can be welded with oxygen-free copper, Kovar, stainless steel and other alloys. The material parameters are as follows:

プロジェクト名 単位 96% Al2O3 97% Al2O3 99% Al2O3 99.6% Al2O3
アルミナ含有量 % アル2O3≧95% アル2O3≧97% アル2O3≧99% アル2O3≧99.6%
サイズ範囲 mm 0.5-500 0.5-500 0.5-500 0.5-500
最高の精度 mm 0.01 0.01 0.01 0.01
嵩密度 g/cm3 ≧3.67 ≧3.70 ≧3.85 ≧3.90
曲げ強度 MPa (25℃) ≧300 ≧300 ≧350 ≧400
圧縮強度 GPa (25℃) ≧1.8 ≧1.8 ≧2.0 ≧2.3
熱伝導率 W/m.K 10-20 10-20 15-21 15-21
平均線膨張係数 /℃ (20～500℃) 7.36×10-6 6.9×10-6 6.9×10-6 6.9×10-6
誘電率 1MHz (20℃) 9.1 9.5 9.8 10
誘電正接値 1MHz (20℃) ≦4×10-4 ≦3×10-4 ≦2×10-4 ≦2×10-4
体積抵抗率 Ω.cm (100℃) ≧1×1014 ≧1×1014 ≧1×1014 ≧1×1014
直流絶縁破壊強度 KV/mm ≧30 ≧35 ≧25 ≧25
耐熱衝撃性 ℃ 20~800 20~800 20~800 20~800
最高使用温度 ℃ ≦1300 ≦1400 ≦1500 ≦1500
耐酸性 一般 適切な 一流 一流
耐アルカリ性 一般 適切な 適切な 一流
メタライゼーションの容易さ 簡単 通常の難易度 中程度の難易度 非常に難しい
気密性 パーム3/s ≦1×10-11 ≦1×10-11 ≦1×10-10 ≦1×10-9
平均引張強さ MPa 130 130 130 130

注：バッチごとに異なる場合があります。

注：パソコンでご覧ください。

Applications of Metallized Ceramics

  • Ceramic metallization for power electronics is essential for IGBT modules, SiC power devices, and inverters.
  • DBC and AMB substrates offer high thermal conductivity and electrical isolation.
  • Metallized ceramics improve thermal dissipation and ensure electrical insulation under high-voltage stress.

  • Enables vacuum electronic packaging for X-ray tubes, RF systems, and particle accelerators.
  • Ensures gas-tightness via helium leak-tested hermetic ceramic seals.
  • Used in ceramic-to-metal feedthroughs, connector pins, and high-vacuum sensors.

  • Gold-plated metallized ceramics ensure biocompatibility and corrosion resistance.
  • Used in implantable pacemakers, diagnostic instruments, and surgical tools.

  • Provide temperature-stable, vibration-resistant joints in jet engines and avionics.
  • Withstand thermal shock and high-pressure extremes.

  • Used for chip packaging, electrostatic chucks, and substrates for optoelectronic devices.

よくある質問（FAQ）

Yes. We offer low-volume prototyping as well as high-volume production.

To create solderable and brazeable surfaces that allow ceramics to be joined to metals without cracking or delamination.

High-purity アルミナ, 窒化アルミニウムそして MGC are most commonly used depending on the application.

Used in high-voltage applications, sensor housingsそして ceramic-to-metal feedthroughs, thanks to its high electrical resistance and bonding capability.

Using helium leak detection, as defined in MIL-STD-883 Method 1014.

Ceramic substrates with metallization designed for power modules, semiconductorsそして aerospace electronics—offering excellent thermal conductivity, electrical insulation, and mechanical integrity.

Metallized ceramics, depending on the metal and ceramic used, can operate continuously at temperatures over 800°C, and survive peaks above 1200°C in brazed joints.

Hermetic sealing refers to an airtight seal that prevents gases or liquids from passing through. In semiconductors, vacuum systemsそして implants, hermetic seals are critical for preventing contamination and failure.

Yes. Ceramics like 窒化アルミニウム そして Al₂O₃, when metallized correctly, provide low-loss, high-frequency performance, making them suitable for antenna windows, resonatorsそして connectors.

先端セラミックス製造のエキスパート

Customize your metallized ceramic parts

With more than a decade of experience in advanced ceramic manufacturing, Great Ceramic understands that the success of metallized ceramics lies in interface engineering, material compatibility, and tight tolerances. Every step of our process is customized to your design, environment, and joining method.

Whether you are building a one-off prototype or preparing for large-scale production, we support flexible order quantities and serve customers in Europe, North America, and Asia.

お問い合わせ 今日

セラミック・デザインに命を吹き込む準備はできていますか？
Contact Great Ceramic for custom ceramic surface metallization solutions that meet the highest standards for your application.